Defensive publication

ABSTRACT

A COLOR DIFFUSION TRANSFER PROCESS IS DESCRIBED WHEREIN: (A) A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE PHOTOSENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING (A) A NONDIFFUSIBLE COUPLER CAPABLE OF REACTING WIH AN OXIDIZED AROMATIC PRIMARY AMINE TO RELEASE A DIFFUSIBLE DYE OR DYE PRECURSOR, AND (B) A NONDIFFUSIBLE AROMATIC PRIMARY AMINE, IS EXPOSES; (B) THE PHOTOGRAPHIC ELEMENT IS THEN TREATED WITH A SILVER HALIDE DEVELOPING AGENT TO EFFECT DEVELOPEMENT AND THEREBY OXIDIZE THE DEVELOPING AGENT; (C) THE OXIDIZED DEVELOPING AGENT THEN CROSS-OXIDIZING THE AMINE; (D) THE OXIDIZED AMINE THEN REACTIG WITH THE NONDIFFUSIBLE COUPLER TO RELEASE A DIFFUSIBLE DYE OR DYE PRECURSOR IMAGEWISE AS A FUNCTION OF THE IMAGEWISE EXPOSURE OF EACH EMULSION LAYER; AND (E) AT LEAST A PORTION OF EACH OF THE IMAGEWISE DISTRIBUTIONS OF DIFFUSIBLE DYE OR DYE PRECURSOR DIFFUING TO A DYE IMAGE-RECEIVING LAYER TO PROVIDE A TRANSFER IMAGE. PREFERRED MONDIFFUSIBLE COUPLERS HAVE THE FORMULA: DYE-LINKING GROUP-BALLASTED COUPLER PREFERRED NONDIFFUSIBLE AMINES HAVE THE FORMULA:   1-R,(BALLAST-),4-NH2-BENZENE   WHEREIN R AND BE (1) OR1 WHEREIN R1 IS H OR A HYDROLYZABLE MOIETY, OR (2)   -N(-R2)-R3   WHEREIN R2 AND R3 ARE EACH H OR ALKYL. THE NONDIFFUSIBLE COUPLER AND NONDIFFUSIBE AMINE COULD ALSO BE COMBINED INTO A SINGLE COMPOUND.

DEEENSWE PEEHEATWN UNITED STATES PATENT OFFICE Published at the request: of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The flles or these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oiiice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JULY 25, 1972 T900,029 COLQR DIFFUSION TRANSFER PROCESS Charles R. Barr, Kodak Park Works, Rochester, N.Y. 14626 Filed July 6, 1971, Ser. No. 160,132 Int. Cl. G03c 7/00 US. Cl. 96-3 No Drawing. 44 Pages Specification A color diffusion transfer process is described wherein:

(A) a photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer containing (a) a nondiffusible coupler capable of reacting with an oxidized aromatic primary amine to release a diifusible dye or dye precursor, and

(b) a nondiffusible aromatic primary amine, is exposed;

(B) the photographic element is then treated with a silver halide developing agent to efiect development and thereby oxidize the developing agent;

(C) the oxidized developing agent then cross-oxidizing the amine;

(D) the oxidized amine then reacting with the nondiffusible coupler to release a diffusible dye or dye precursor imagewise as a function of the imagewise exposure of each emulsion layer; and

(E) at least a portion of each of the imagewise distributions of diflusible dye or dye precursor diffusing to a dye image rcceiving layer to provide a transfer image.

Preferred nondiffusible couplers have the formula:

DYE-LINKING GROUP-BALLASTED COUPLER Preferred nondilfusible amines have the formula:

Ballast wherein R can be (1) OR wherein R is H or a hydrolyzable moiety, or (2) wherein R and R are each H or alkyl.

The nondiifusible coupler and nondifiusi'ble amine could also be combined into a single compound. 

